Material-applying apparatus



' Feb. 21, 1928.

W. H. RAY

MATERIAL APPLYING APPARATUS Filed Dec. 1, 1924 4 Sheets-Sheet 1 Feb. 21, 1928.

' w. H. RAY

MATERIAL APPLYING APPARATUS Filed Dec. 1, 1924 4 Sheets-Sheet 2 Feb. 21, 1928.

1,659,895 w. H. RAY MATERIAL APPLYING APPARATUS Filed Dec. 1, 1924 4 Sheets-Sheet s W. H. RAY

MATERIAL APPLYING APPARATUS Feb. 21, 1928.

4 She ets -Sheet 4 v Filed Dec. 1, 1924 7 fill/7' waif??? 7 y MW? I 'bodying the invention;

Patented Feb. 21, 1928.

UNITED S T A T E S PATENT QOFFICE.

WILLIAM HARRY RAY, OF CHICAGO, ILLINOIS, ASSIGNOR T0 WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

MATERIAL-APPLYING APPARATUS.

Application 'filed December 1, 1924. Serial No. 753,068.

This invention relates tomaterial applying apparatus, and more particularly to apparatus for cementing articles to each other.

The object of the invention .is to provide improved apparatus for applying liquid material to an article or articles.

One embodiment of the invention is employed in the manufacture of loud speakers of the type shown and described in the copending application of Norman H. Ricker, Serial No. 492,675, filed Oct. 6, 1922, to cement the paper cones of each loud speaker to each other. This embodiment of the invention comprises a rotatable support, a device for centering the cones upon the-support, an electric motor for rotating the support at a uniform speed, an adjustably mounted receptacle for holding liquid adhesive under uniform pressure, a plurality ofnozzles communicating with the receptacle, and a spring for yieldingly holding hesive will be evenly distributed along the outer edges of the cones when the support 1s rotated. r Fig. 1 is a plan view of apparatus em- Figs. 2 and '3 are sectionstaken on lines 2 2 and 33, respectively, of Fig. 1;

Figs. 4-and 5 are sections taken on -lines 4-4 and 5-5, respectively, of Fig. 3; I Fig. 6 is a vertical section through apparatus employed in the assembling ofr'articles' which are cementedto each other by the ,ap- .paratus-shown in Figs. 1 to 5, inclusive;

Fig. 7 is aside view partly in section of a drying rack in which the cemented articles are preferably placed immediately after I they have been removed from the apparatus shown in Figs. 1 to5, inclusive, and

Fig. 8 is a fragmentary planview of the apparatus shown in Fig. 7.

Referring 'to the drawings, 11 and 12 are paper cones adapted to be cemented to each otherby the apparatus shown in Figs. 1 to 5, inclusive, the cones being cemented to each other to form par'tof a loud speaker of the type shown in the aforementioned application. A sleeve 14 secured in theapex of the cone 11 has acentral bore 15, the axis of which is coincident with the axis of the cone. The apex of the cone 12 is cut away to provide a circular opening 17, the marginaledge of which is reenforced by an annulus 18 of. sheet metal having a U-shaped cross section and fitting over the circular edge of the opening 17. Pierced through the cone 12 and the annulus 18 are holes 19 which are equi-distantly spaced from each other and from the axis of the cone. The diameter of the base of the cone 12 is less than that of the cone 11 for a purpose which will presently appear.

Referring now to Figs. 1 and 2, 2O indicates generally a work holding device adapted to carry the cones 11 and 12 while they are being cemented to each other. The work holding device 20 comprises a base 22 in which is journaled a vertically disposed shaft 23. The worm, gear 24 secured to the shaft 23 meshes'with a worm 25 keyed to a shaft 27 also journaled in thebase '22. The

of an electric motor 30. Pinned to the shaft 23 is a friction disk 32 engaging a friction element 33 interposed between the friction disk and a work support 35 rotatably journaled' upon the shaft 23. A compression spring 37 urges the work support 35 into engagement with thefrictionelement 33, the

spring being interposed betweenthe work support and a shouldered Pin 39 threaded into the .upper end of the shaft 23. As

shown, the work holder 35 preferably com"- prises integral brackets40, each of which comprises arcuate arms'41, the arms 41 being provided with conical surfaces 43 upon which the conell may beplaced and contered so that the sleeve 14 will be received in a bore 46 in the shouldered pin 39.

When the cone 11 is so placed upon the work support 35 its axis will be substantially coincident with the axis of the shaft 23.

The Gone 12 is centered upon the cone 11 by a centering device 45 comprising a plate 47 securedto one end of a pin 48 upon which a member 49 is slidably and rotatably mounted, displacement of the member 49 along the pin 48 being limited by pins 50. A conical surface 52 upon the plate 47 is adapted to engage the inner surface of the cone 11 and a pin 53 projecting from the plate is adapted'to engage the bore 15. Projecting from the member 49 are tapered centering pins '56 adapted to engage the holes 19 to draw the cone 12 into a position wherein'its axis is coincident with the axis of the cone 11. A ring-shaped weight 58 is employed to hold the cone 12 firmly in place upon the'cone 11'.

, Positioned to one side of the work holding device 20 is a dispensing device 60 comprising a base plate 62 and a vertically disposed rod 63 mounted in the base plate. A sleeve 65 slidably journaled upon the rod 63 may be secured in aplurality of adjustable positions upon the rod by a set screw 66 threaded into a head 67 formed upon the sleeve. Slidably mounted upon the sleeve 65 is a bracket 70 which is urged against a nut 71 threaded upon the sleeve by a compression spring 72 which is interposed between the bracket 70 and the head 67. Secured to the bracket 70 is a receptacle 73 for holding a supply of adhesive material in a liquid state, the receptacle being provided with a threaded opening 75 whereby the Supply of adhesive may be replenished whenever necessary. The opening 75 is normally closed by a plug 77. A tube 79 communicating with the receptacle 7 3 also communicates with a supply (not'shown) of compressed air whereby the liquid adhesive in the receptacle may be subjected to a uniform pressure. As shown in Fig. 3, the lower end of the receptacle 7 3 is V rovided with a dischargeopening 81 which 1s controlled by a valve 82 comprising a plunger 84 which has a transverse bore- 86.

The transverse bore 86 is normally held out of alignment with the discharge opening 81 by a compression spring 88 wound upon a valve stem 90 projecting from the plunger 84, the spring 88 being interposed between'a plate 92 secured to the receptacle 73 and a handle 94 secured to the valve stem 90. By pressing upon the handle 94 the operator may bring the bore 86 into alignment with the discharge opening 81, a screw 95 being provided to stop the member-84'when it is dis-J placed a sufiicient distance to align the bore 86 with the discharge opening 81. Projecting from the receptacle 73 is a tube 100 which communicates with the discharge opening 81 and rotatably journals a sleeve 102 having an aperture 104 in line with an areuate slot-105 cut into the tube 100. The sleeve 102 is held in place upon the tube 100 by a screw 107 threaded into the tube in such manner that it closes the lower end thereof. Normally secured to the sleeve 102 is an L-shaped bracket 110 having a passage 111 communieating with the aperture 104. The passage 111 terminates in nozzles 113 and 114 which are disposed at right angles to each other. The nozzle 113 is adapted to apply adhesive to the outer edge of the cone 11 and the nozzle 114 is adapted to apply adhesive along the outer edge of the cone 12 to cement the cone 12 to the cone 11. A pin-116 projecting from the bracket 110 is engageable with the outer edge of the cone 11 to hold the nozzles 113 and 114 in predetermined positions with respect to the cones 11 and 12, the pin 116 being aided in this task by a spring 118 wound around the sleeve 102. One end of the spring 118 is secured tothe bracket 110 and the otherrend thereof is secured to a bracket 120 secured to the sleeve 102, the ary rangement being such that the spring 118 tends to rotate the bracket 110 in a counterclockwise direction (Fig. 5). Slidably mounted in the bracket 110 is a pin 122 which is urged toward the bracket 120 by V a spring 123. The pin 122 is engageable with a bore 125 formed in the bottom surface of the bracket 120, a cam surface 127 being provided upon the bracket 120 to depress are placed in the apparatus shown in Figs.

1 to 5 inclusive. The block 130 rests upon a suit-able support 131 and is provided with a conical surface 132 to receive the cone 11, the sleeve 14 being received by a bore-134 formed in the block. A bracket 136 is placed upon the support 131 in such a position that a ring 138 forming a part thereof is disposed around the block 130. The bracket 136 forms part of a drying frame indicated generally by 139 and comprising a plurality of brackets 136 (Figs. 7 j and 8). The drying frame 139 also comprises a base 140 which rotatably journals an uprlght 141 having rigidly securedthereto a'plurality of plates 142. Each plate 142 has a plurality of tapered slots 143 adapted to receive similarly shapedlugs 145 formed upon the brackets136.

In the operation of the apparatus, the block 130 and a bracket 136 are placed upon the support 131 in the manner illustrated in a Fig. 6. A cone 11 is then placed upon the block 130 and a cone 12 is centered thereon by meansof the centering device 45,.a rin 58 being placed upon the cone 12 to hold it firmly in place upon the cone 11. The

bracket 136 is then employed to carry 'the' assembled cones to the work holding device 20 and is so placed in the work support 35 that it rest-s upon the brackets 40 and the cone 11 rests upon the conical surfaces 43.

The bracket 110 which has been previously moved into a position wherein the pin 122 engages the bore is returned to a position wherein the pin 116 will engage the outer edge of the cone 11 under the'yielding action of the spring 118. A motor 30 is then connected with any suitable source (not shown) of electrical energy to rotate the work support 35 at a uniform speed. i The operator then operates the valve 82 to bring the bore 86 into alignment with the discharge opening 81 so that the adhesive material in the receptacle 60 Will be discharged under pressure through the nozzles 113 and 114. When the adhesive material has been applied in the manner above described along the entire outer edge of each of the cones 11 and 12, the operator permits the spring 88 to operate the valve 82 to stop theflow of adhesive material through the discharge opening 81. The motor is then brought to a full stop and the bracket 110 is swung into a position wherein the pin 22 again engages the bore 125. The cones 11 and 12 are removed from thework holding device 20 by means of the bracket 136 which is then mounted upon one of the plates 142, the centering device 45 being Withdrawn from the cones for use in a following cementing operation.

The adhesive material applied to the edge of the cone 11 by the nozzle 113 reenforces this edge so that it will not split When the cone is vibrated or When the cone expands or contracts due to atmospheric conditions.

The adhesive material applied along the outer edge of the cone 12 by the nozzle 114 cements the tWo cones to each other. The

adhesive material is evenly distributed and when dry does not appear unsightly as would be the case if it Were distributed unevenly.

lVhat is claimed is:

1. In an apparatus for cementing tWo op positely dished cones, means for centering one of the cones with respect to a rotatable work support, and means for centering the second cone With respect to the first.

2. In anapparatus for cementing t-Wo oppositely dished cones, means for centering the cones with respect to each other, and a weighted ring to hold the cones in fixed relation to each other.

3. In a material applying apparatus, a Work support, means for rotating'the support, means for applying material to the Work, and means for causing said material applying means to move in a path determined by the irregularities in the Work.

In Witness whereof, I hereunto subscribe my name this 17th day of November, A. D.,

WILLIAM HARRY RAY, 

